X0202 4 2005-05-06 0 0000060849 LUFKIN INDUSTRIES INC LUFK 0001185404 GLICK JOHN F P. O. BOX 849 LUFKIN TX 75902 0 1 0 0 Vice President Common Stock 2005-05-06 4 M 0 1800 12.98 A 7600 D Common Stock 2005-05-06 4 S 0 1800 32.131 D 5800 D Common Stock 2005-05-06 4 M 0 450 12.98 A 6250 D Common Stock 2005-05-06 4 S 0 450 32.131 D 5800 D Common Stock 2005-05-06 4 M 0 1550 12.95 A 7350 D Common Stock 2005-05-06 4 S 0 1550 32.131 D 5800 D Common Stock 2005-05-06 4 M 0 1000 12.95 A 6800 D Common Stock 2005-05-06 4 S 0 1000 32.00 D 5800 D Common Stock 2005-05-06 4 M 0 2000 12.95 A 7800 D Common Stock 2005-05-06 4 S 0 2000 32.08 D 5800 D Common Stock 2005-05-06 4 M 0 2000 12.95 A 7800 D Common Stock 2005-05-06 4 S 0 2000 32.16 D 5800 D Common Stock 2005-05-06 4 M 0 1250 12.95 A 7050 D Common Stock 2005-05-06 4 S 0 1250 32.23 D 5800 D Common Stock 2005-05-06 4 M 0 250 12.16 A 6050 D Common Stock 2005-05-06 4 S 0 250 32.23 D 5800 D Common Stock 2005-05-06 4 M 0 2000 12.16 A 7800 D Common Stock 2005-05-06 4 S 0 2000 32.00 D 5800 D Common Stock 2005-05-06 4 M 0 1500 12.16 A 7300 D Common Stock 2005-05-06 4 S 0 1500 32.076 D 5800 D Common Stock 2005-05-06 4 M 0 2000 12.16 A 7800 D Common Stock 2005-05-06 4 S 0 2000 32.05 D 5800 D Option to Purchase Common Stock 12.98 2005-05-06 4 M 0 2250 12.98 D 2002-12-04 2011-12-04 Common Stock 2250 56250 D Option to Purchase Common Stock 12.95 2005-05-06 4 M 0 7800 12.95 D 2003-11-05 2012-11-05 Common Stock 7800 48450 D Option to Purchase Common Stock 12.16 2005-05-06 4 M 0 5750 12.16 D 2004-11-11 2013-11-11 Common Stock 5750 42700 D On April 19, 2005, the common stock of Lufkin Industries split 2-for-1, resulting in the reporting person's acquisition of 2900 additional shares of common stock. This option was previously reported as covering 4500 shares at an exercise price of $25.96 per share, but was adjusted to reflect a stock split that occurred on April 19, 2005. This option was previously reported as covering 7800 shares at an exercise price of $25.89 per share, but was adjusted to reflect a stock split that occurred on April 19, 2005. This option was previously reported as covering 11,500 shares at an exercise price of $24.31 per share, but was adjusted to reflect a stock split that occurred on April 19, 2005. John F. Glick 2005-05-06